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Detection of the electron spin resonance of two-dimensional electrons at large wave vectors

Research output: Contribution to journalJournal article

Published

  • I. V. Kukushkin
  • J. H. Smet
  • D. S. L. Abergel
  • Vladimir Falko
  • W. Wegscheider
  • K. von Klitzing
Article number126807
Journal publication date31/03/2006
JournalPhysical Review Letters
Journal number12
Volume96
Number of pages4
Pages-
Original languageEnglish

Abstract

We have investigated the electron spin resonance at nonzero wave vector in GaAs single quantum wells by combining the virtues of high frequency surface acoustic wave generation to produce excitations with large wave numbers with a sensitive optical scheme to detect resonant absorption. The observed large deviations from the single particle Zeeman energy are attributed to the exchange interaction. The enhancement of the electronic g(*) factor is, however, substantially smaller compared with theoretical predictions for spin waves when adopting a bare Coulomb interaction potential.

Bibliographic note

© 2006 The American Physical Society